【单选题】【消耗次数:1】
平面汇交力系合成的结果是一个()。
主矢和主矩
合力
主矩
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相关题目
【单选题】 平面汇交力系合成的结果是一个( )。
①  合力
②  合力偶
③  主矩
④  主矢和主矩
【判断题】 平面一般力系的合力是主矢。
①  正确
②  错误
【单选题】 平面汇交力系平衡时,合力是()
①  R=0
②  R0
③  R0
④  不确定
【单选题】 平面力偶系合成的结果是一个()。
①  合力偶
②  合力
③  主矩
④  主矢和主矩
【单选题】 平面力偶系合成的结果是一个( )。
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②  合力偶
③  主矩
④  主矢和主矩
【单选题】 平面力偶系合成的结果是一个( )。
①  合力
②  合力偶
③  主矩
④  主矢和主矩
【单选题】 平面力偶系合成的结果是一个( )。
①  合力
②  合力偶
③  主矩
④  主矢和主矩
【单选题】 平面一般力系向不同点简化时,主矩是否相同()
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②  相同
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【单选题】 一个物体上的作用力系,满足()条件,就称这种力系称为平面汇交力系。
①  作用线都在同一平面内,且汇交于一点
②  作用线都在同一平面内,但不交于一点
③  作用线在不同一平面内,且汇交于一点
④  作用线在不同一平面内,且不交于一点
【单选题】 平面一般力系向一点O简化结果,得到一个主矢量R′和一个主矩m0,下列四种情况,属于平衡的应是()。
①  R′≠0m0=0
②  R′=0m0=0
③  R′≠0m0≠0
④  R′=0m0≠0
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